201319969 has 2 divisors, whose sum is σ = 201319970. Its totient is φ = 201319968.

The previous prime is 201319961. The next prime is 201320033. The reversal of 201319969 is 969913102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166745569 + 34574400 = 12913^2 + 5880^2 .

It is a cyclic number.

It is not a de Polignac number, because 201319969 - 2³ = 201319961 is a prime.

It is a super-2 number, since 2×201319969² = 81059459836321922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (201319961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100659984 + 100659985.

It is an arithmetic number, because the mean of its divisors is an integer number (100659985).

Almost surely, 2^201319969 is an apocalyptic number.

It is an amenable number.

201319969 is a deficient number, since it is larger than the sum of its proper divisors (1).

201319969 is an equidigital number, since it uses as much as digits as its factorization.

201319969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 201319969 is about 14188.7268280139. The cubic root of 201319969 is about 586.0872652485.

The spelling of 201319969 in words is "two hundred one million, three hundred nineteen thousand, nine hundred sixty-nine".